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Finding the Fourth Proportional to 329.62, 454.66 and 198.50

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Solution

The fourth proportional to 329.62, 454.66 and 198.50 is: 273.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.62 : 454.66 = 198.50 : x
  2. Step 2: Convert to fraction form
    329.62/454.66 = 198.50/x
  3. Step 3: Cross multiply
    329.62x = 454.66 × 198.50
  4. Step 4: Simplify right side
    329.62x = 90,250.01
  5. Step 5: Solve for x
    x = 90,250.01/329.62
  6. Step 6: Final answer
    x = 273.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.